Maybe you're not very familiar with the Hololens. It looks very different to me. The "goggles" look seems to indicate the rendering will cover the full field of view. The computer pack seems to indicate they are either going for greater visual fidelity or longer battery life (or both). And the controller is more akin to the desktop VR systems than Hololens' janky hand gestures (though I would honestly prefer someone just solve hand gestures already).

This is a lot more different from the Hololens than the Vive and Rift are from each other.